Which transformations are needed to change the parent cosine function to
y=3cos(10(x-pi)) ?
THE CORRECT ANSWER IS
B) vertical stretch of 3, horizontal compression to a period of pi/5, phase shift of pi units to the right

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

hope it

answer: .64

step-by-step explanation

set up the formula for standard deviation for this set of numbers, then simplify